FINDCHIRP: an algorithm for detection of gravitational waves from inspiraling compact binaries

Matched-filter searches for gravitational waves from coalescing compact binaries by the LIGO Scientific Collaboration use the FINDCHIRP algorithm: an implementation of the optimal filter with innovations to account for unknown signal parameters and to improve performance on detector data that has nonstationary and non-Gaussian artifacts. We provide details on the FINDCHIRP algorithm as used in the search for subsolar mass binaries, binary neutron stars, neutron star-black hole binaries, and binary black holes.Comment: 19 pages, 1 figure, journal version with Creative Commons 4.0 open-access license adde

A power filter for the detection of burst sources of gravitational radiation in interferometric detectors

We present a filter for detecting gravitational wave signals from burst sources. This filter requires only minimal advance knowledge of the expected signal: i.e. the signal's frequency band and time duration. It consists of a threshold on the total power in the data stream in the specified signal band during the specified time. This filter is optimal (in the Neyman-Pearson sense) for signal searches where only this minimal information is available.Comment: 3 pages, RevTeX, GWDAW '99 proceedings contribution, submitted to Int. J. Modern Phys.

Crop Fertilization on Texas Alluvial Soils.

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Jewish Persecutions and Weather Shocks: 1100–1800

Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/137319/1/ecoj12331_am.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/137319/2/ecoj12331-sup-0001-AppendixA-D.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/137319/3/ecoj12331.pd

Properties and Functions of Ih in Hippocampal Area CA3 Interneurons

Ih is an important contributor to the subthreshold membrane properties of various mammalian neurons, including interneurons. Here I characterize the properties of Ih in a subpopulation of hippocampal area CA3 interneurons with somata in stratum radiatum and stratum lacunosom moleculare. As shown in previous studies, Ih in these cells has sigmoidal voltage dependence of activation with kinetics characterized by two exponential components for both channel activation and deactivation. Interestingly, the activation and deactivation kinetics were most aptly described by distinct functions of voltage. These results were incorporated into a novel biophysical model of Ih that was applied in single compartment model simulations and dynamic clamp experiments. Finally, I assessed the functional consequences of Ih by examining the effects of this current on subthreshold temporal summation of mossy fiber EPSPs as well as frequency dependent neuronal responses. My results show that Ih decreases temporal summation of mossy fiber EPSPs but does not impart resonance in CA3 interneurons at potentials where Ih is active

Barite Deposits of Kentucky

Barite deposits are known to be present in 23 counties in Kentucky, principally in the Central Kentucky Mineral District and the Western Kentucky Fluorspar District. Field investigations and a literature search indicate the presence of barite at more than 170 outcrops, prospects, and abandoned mines. Geologically, most of the Kentucky barite deposits are classified as vein or residual deposits. The vein deposits are cavity and breccia fills along faults and joints, commonly in limestone. Residual deposits occur in an unconsolidated clayey residuum formed by weathering of preexisting vein or breccia deposits. Most deposits are mixed ores commonly containing calcite, fluorite, galena, and sphalerite. Host rocks are almost exclusively formations of Ordovician and Mississippian ages. Barite production in Kentucky has been small, and most has been from residual or gravel\u27\u27 deposits in weathered material above fault zones. Since barite is commonly associated with fluorspar and the two minerals have been difficult to separate in milling operations, mixed ores have been bypassed in a number of instances and little quantitative information is available on them. Further evaluation will require additional exploration, and, particularly, more core drilling. There were no active barite mines in Kentucky at the time of this investigation

Patterns and processes in the history of body size in turritelline gastropods, Jurassic to Recent

Body size is an important trait with implications for energy use and ecology as well as generation time and evolutionary rates. Turritelline gastropods are widely distributed through geologic time and space, making them an excellent group for evaluating macroevolutionary patterns. To evaluate the pattern of body-size change in turritelline gastropods, we compiled a dataset of shell lengths of 316 species of turritelline gastropods spanning the Jurassic to Recent. Type specimens were almost always significantly larger than specimen distributions from the same species. We found that turritelline gastropod size was inversely correlated with latitude, a trend likely driven by the Neogene-Recent diversification of small-bodied Southern Hemisphere taxa. A time series model was applied to distinguish among three possible macroevolutionary patterns: unbiased random walk (no directional trend), biased random walk (directional trend), and stasis (no net change). We determined that turritelline gastropods have experienced stasis in body size throughout their evolutionary history, adding to the growing literature documenting directionless body-size trends in marine invertebrate clades. Stasis of geographically widespread clades may be the result of ecological variability across the environmental range occupied by the group or differential diversification into opposing environments. Turritelline life-history patterns, especially their reproductive strategy that combines a short life span and decline in growth rate around 1 year of age to reallocate energy to reproduction, might circumvent selection for longevity and larger size, while further decrease in minimum size is likely limited by feeding efficiency and anti-predatory defense. The expectation that species or clades should continue to evolve to occupy larger size classes conflicts with the evolutionary advantages of small size, which in turritelline gastropods include high generational turnover and larger population sizes that yield opportunities for genetic variance

Spectral Signatures of Immature \u3cem\u3eLucilia sericata\u3c/em\u3e (Meigen) (Diptera: Calliphoridae)

Hyperspectral remote sensing is an innovative technology with applications in many sciences and is a non-destructive method that may offer more precise aging within development stages. Hyperspectral reflectance measurements from the anterior, midsection, and posterior of Lucilia sericata (Meigen) larvae and pupae were conducted daily from samples of the developing insects beginning at second instar. Only midsection measurements were conducted on second instar larvae due to their size, to ensure that the measurement was not of reflective surroundings. Once measured, all insects were washed with deionized water, blotted with filter paper, and re-measured. Daily age prediction during the post-feeding stage was not impacted by the unwashed insect measurements and was best predicted based on posterior measurements. The second and third instar larvae, which move about their food source, had different contributing coefficients to the functional regression model for the hyperspectral measurements of the washed compared with unwashed specimens. Although washing did not affect the daily prediction within these stages, it is still encouraged in order to decrease the effect of food source on spectral reflectance. Days within the intra-puparial period were best predicted based on anterior measurements and were not well distinguished from one another in the first few days based on midsection and posterior measurements

Hyperspectral measurements of immature \u3cem\u3eLucilia sericata\u3c/em\u3e (Meigen) (Diptera: Calliphoridae) raised on different food substrates

Immature Lucilia sericata (Meigen) raised on beef liver, beef heart, pork liver and pork heart at a mean temperature of 20.6°C took a minimum of 20 days to complete development. Minimum development time differences within stages were observed between the meat types (pork/beef), but not the organ types (liver/heart). Daily hyperspectral measurements were conducted and a functional regression was completed to examine the main effects of meat and organ type on daily spectral measurements. The model examined post feeding larval spectral measurements of insects raised on beef liver alone, the effect of those raised on pork compared with those raised on beef, the effect of those raised on heart compared with those raised on liver and the interactional effect of those raised on pork heart compared with those raised on beef liver. The analyses indicated that the spectral measurements of post feeding L. sericata raised on pork and beef organs (liver and heart) are affected by the meat and organ type